The T-Rex Room-Mate Junior offers 4 state-of-the-art sounds algorithms; SPRING, ROOM, HALL and LFO. The reverb options are endless. Use the decay knob to adjust the length of your reverb trail in all four modes. It is also possible to use your Room-Mate Junior in an effects loop without overloading the pedal’s input stage, you simply adjust the INPUT GAIN knob accordingly. With some amps their built-in spring reverbs often can make the sound very trebly as well as having to deal with noise issues. The Room-Mate Junior will eradicate any speculations about unwanted noise and vibrations in a live-setting.